Final answer:
Latitude lines are labeled "North" in New York State because it's above the equator in the Northern Hemisphere, and thus all locations have a north latitude designation.
Step-by-step explanation:
The reason all latitude lines are labeled "North" in New York State is that New York State is located entirely in the Northern Hemisphere. Lines of latitude, also known as parallels, run east and west around the Earth and are used to measure the distance in degrees north or south from the equator. Since New York State lies north of the equator, all the latitude lines within it are consequently labelled with a "N" for north, indicating their position relative to the equator. For instance, the latitude of New York City is approximately 40.7128° N.
Geographers and cartographers use these lines of latitude, in conjunction with lines of longitude, to pinpoint any location on Earth. The equator serves as the starting point for measuring latitude, with the numbering increasing up to 90° at the North Pole and decreasing to -90° at the South Pole. Therefore, every location situated north of the equator, like all of New York State, will have latitude lines labeled with "N" to indicate north latitude.